python基础 Day01 练习题

1 字符串格式化

#!/urs/bin/env python

name = input("Name: ")
age = int(input("Age: "))
job = input("Job: ")
salary = input("Salary: ")

info1 = """

----------- info1 of %s ---------
name: %s
age: %s
job: %s
Salary: %s
""" % (name, name, age, job, salary)

print(info1)

info2 = """

----------- info2 of {_name} ----
Name: {_name}
Age: {_age}
Job: {_job}
Salary: {_salary}
""".format(_name=name,
           _age=age,
           _job=job,
           _salary=salary)

print(info2)

info3 = """

------ info3 of {0} -------
Name: {0}
Age: {1}
Job: {2}
Salary: {3}
""".format(name, age, job, salary)

print(info3)

2 密码非明文显示

#!/urs/bin/env python
# -*- coding:utf-8 -*-

import getpass
username = input("username:")
password = getpass.getpass("password:")

print(username)
print(password)

注在Pycharm中不可以，在命令行模式运行：python xxx.py可以

 模拟登陆：
1. 用户输入帐号密码进行登陆
2. 用户信息保存在文件内
3. 用户密码输入错误三次后锁定用户 

#!/urs/bin/env python
# -*- coding:utf-8 -*-


lock_users = []
f0 = open("lock_users.db", encoding="utf-8")
for line in f0.readlines():
    line = line.strip()
    lock_users.append(line)
f0.close()


users_list = []
f1 = open("users.db", "r",  encoding="utf-8")
for line in f1.readlines():
    line = line.strip().split()
    users_list.append(line[0])
    users_list.append(line[1])
f1.close()


times = 3


for i in range(times):
    username = input("Enter your name:")
    password = input("Enter your password:")

    if username in lock_users:
        print("	Sorry, you're locked now. Please contact administrators.")
        break

    if username in users_list and password == users_list[users_list.index(username) + 1]:
        print("	Welcome %s login !" % username)
        break
    else:
        print("	username or password is wrong.")

    if i == times-1:
        f2 = open("lock_users.db", "a+", encoding="utf-8")
        f2.write("
")
        f2.write(username)
        f2.close()
        print("	{}, you're locked!".format(username))

三级菜单：
1. 运行程序输出第一级菜单
2. 选择一级菜单某项，输出二级菜单，同理输出三级菜单
3. 菜单数据保存在文件中
4. 让用户选择是否要退出
5. 有返回上一级菜单的功能
评分标准：
用多层嵌套while循环的方式完成作业2，85分
只用一层循环完成作业2，100分

#!/urs/bin/env python
# -*- coding:utf-8 -*-

data ={
    '北京':{
         '海淀区':{
             '颐和园', '圆明园遗址公园', '旧土城遗址公园', '大钟寺'
         },
        '东城区':{
            '劳动人民文化宫', '老舍纪念馆', '柳荫公园', '青年湖公园'
        },
        },
    '浙江':{
        '杭州':{
            '西湖', '西溪湿地', '宋城', '钱塘江', '南宋御街',
        },
        '绍兴':{
            '柯岩风景区、大禹陵、东湖、鲁迅故里',
        },
        },
    '山东':{
        '济南':{
            '趵突泉 大明湖 千佛山 芙蓉街(小吃街)',
        },
        '青岛':{
            '栈桥,小鱼山,海底世界,第一海水浴场,八大关风景区, 花石楼',
        },
        },
}

flag = True

while flag:
    for i in data:
        print(i)
    choose1 = input(">")

    if choose1 == "q":
        flag = False

    while flag:
        for j in data[choose1]:
            print("	", j)

        choose2 = input(">>")
        if choose2 == 'b':
            break
        elif choose2 == 'q':
            flag = False

        while flag:
            for k in data[choose1][choose2]:
                print("		",k)

            choose3 = input(">>>")
            if choose3 == 'b':
                break
            elif choose3 == 'q':
                flag = False

#!/urs/bin/env python
# -*- coding:utf-8 -*-

menu = {
    '北京':{
        '海淀':{
            '五道口':{
                'soho':{},
                '网易':{},
                'google':{}
            },
            '中关村':{
                '爱奇艺':{},
                '汽车之家':{},
                'youku':{},
            },
            '上地':{
                '百度':{},
            },
        },
        '昌平':{
            '沙河':{
                '老男孩':{},
                '北航':{},
            },
            '天通苑':{},
            '回龙观':{},
        },
        '朝阳':{},
        '东城':{},
    },
    '上海':{
        '闵行':{
            "人民广场":{
                '炸鸡店':{}
            }
        },
        '闸北':{
            '火车战':{
                '携程':{}
            }
        },
        '浦东':{},
    },
    '山东':{},
}


exit_flag = False
current_layer = menu

layers = [menu]

while not  exit_flag:
    for k in current_layer:
        print(k)
    choice = input(">>:").strip()
    if choice == "b":
        current_layer = layers[-1]
        #print("change to laster", current_layer)
        layers.pop()
    elif choice not  in current_layer:continue
    else:
        layers.append(current_layer)
        current_layer = current_layer[choice]

 最多可连续3次猜年龄

#!/urs/bin/env python
# -*- coding:utf-8 -*-

"""
最多可连续3次猜年龄
"""
"""
_age = 56
count = 3

while count > 0:
    age = int(input("age = "))
    if age == _age:
        print("You're right.")
        break
    elif age > _age:
        print("think smaller ... ")
    else:
        print("think bigger ... ")
    count -= 1
else:
    print("Sorry, there's not times for you.")
"""

_age = 56

for i in range(3):
    age = int(input("age = "))
    if age == _age:
        print("You're right.")
        break
    elif age > _age:
        print("think smaller ... ")
    else:
        print("think bigger ... ")
else:
    print("Sorry, there's not times for you.")

可参看网址：

http://www.cnblogs.com/alex3714/articles/5717620.html